Barcode Generator
Generate professional barcodes in multiple formats including Code128, EAN-13, UPC-A with batch generation
Custom Settings
Higher multipliers produce clearer images, suitable for printing
Batch Generation & Printing
Generate multiple barcodes using custom templates, supports grid layout preview and printing
Barcode will be displayed here
About Barcode Generator
What is a Barcode?
A barcode is a method of representing data in a visual, machine-readable form. It consists of a series of parallel lines and spaces of varying widths that can be read by optical scanners. Barcodes are widely used in retail, logistics, healthcare, and many other industries.
How to Use This Tool
Basic Steps
- Enter the data to encode in the input box
- Select the appropriate barcode format (e.g., Code 128, EAN-13)
- Adjust custom settings (width, height, colors, etc.)
- Click 'Generate Barcode' button or press Enter to preview
- Download as PNG or SVG format, or copy to clipboard
Batch Generation Feature
Enable batch mode to generate multiple barcodes at once. Use template variables to automatically generate sequences:
{SEQ}Sequence number (e.g., 1, 2, 3...){SEQNUM}Padded sequence number (e.g., 0001, 0002..., digits determined by sequence digits setting){RANDOM}Random number (digits determined by sequence digits setting)
PNG
Bitmap format, suitable for web display and general printing
SVG
Vector format, lossless scaling, suitable for high-quality printing
Supported Barcode Formats
Code 128
A high-density linear barcode symbology capable of encoding all 128 ASCII characters. It is widely used in transportation and logistics and forms the basis of the GS1-128 standard. It supports three character sets (A/B/C) and can switch automatically to achieve the shortest encoding.
Code 39
A variable-length discrete barcode symbology that can encode uppercase letters, digits and some special characters. Due to its simplicity and self-checking properties, it is widely used in non-retail environments.
EAN-13
European Article Number (EAN-13) is the most widely used retail product barcode standard worldwide. It consists of 13 digits, where the last digit is a checksum. Enter 12 digits and the checksum will be calculated automatically.
EAN-8
EAN-8 is a compact version of EAN-13, suitable for small product packages. It consists of 8 digits, with the last digit as checksum.
UPC-A
Universal Product Code (UPC-A) is the standard barcode used in the retail industry in the United States and Canada. It consists of 12 digits, with the last digit as checksum.
ITF-14
Interleaved 2 of 5 (ITF-14) is used for identifying cartons and pallets. In the 14 digits, the last digit is a checksum. It can be printed directly on corrugated cardboard.
MSI (Modified Plessey)
MSI (Modified Plessey) barcodes are mainly used for warehouse shelving and inventory management and support multiple checksum algorithms.
Pharmacode
Pharmacode is a barcode symbology designed for the pharmaceutical industry, used on automated drug packaging lines. It can encode only integers between 3 and 131070.
Codabar
Codabar is an older barcode format mainly used in libraries, blood banks and parcel tracking. It requires A, B, C or D as start/stop characters.
Use Cases
Frequently Asked Questions
Why does my EAN-13 barcode generation fail?
EAN-13 requires 12 digits (check digit is automatically calculated). Ensure all input is numeric, without letters or special characters. If entering 13 digits, the system will verify the check digit.
What's the difference between PNG and SVG formats?
PNG is a bitmap format with smaller file size, suitable for web display and general printing. SVG is a vector format that can be scaled without loss, suitable for professional printing requiring high-quality output.
How to ensure barcodes can be scanned correctly?
Ensure sufficient contrast (black bars on white background is best), maintain appropriate size (recommended width not less than 3cm), leave adequate white space around (quiet zone), and test scanning before printing.
How to set up batch barcode templates?
Use template variables to generate sequences. For example: PROD- will generate PROD-0001, PROD-0002, etc. You can set start number, increment step, and sequence digits to control the sequence format.
Best Practices
Ensure sufficient contrast (dark bars with light background)
Maintain appropriate barcode size to ensure scanning devices can read
Leave adequate white space (quiet zone) around the barcode
Always test barcode readability before printing
Choose a barcode format compatible with your use case